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Revert 165732 for further review.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165747 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Micah Villmow
2012-10-11 21:27:41 +00:00
parent d9a3bad448
commit fb384d61c7
40 changed files with 109 additions and 188 deletions
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6
lib/Analysis/CodeMetrics.cpp
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@ -91,16 +91,14 @@ bool llvm::isInstructionFree(const Instruction *I, const DataLayout *TD) {
// which doesn't contain values outside the range of a pointer.
if (isa<IntToPtrInst>(CI) && TD &&
TD->isLegalInteger(Op->getType()->getScalarSizeInBits()) &&
Op->getType()->getScalarSizeInBits() <= TD->getPointerSizeInBits(
cast<IntToPtrInst>(CI)->getAddressSpace()))
Op->getType()->getScalarSizeInBits() <= TD->getPointerSizeInBits())
return true;
// A ptrtoint cast is free so long as the result is large enough to store
// the pointer, and a legal integer type.
if (isa<PtrToIntInst>(CI) && TD &&
TD->isLegalInteger(Op->getType()->getScalarSizeInBits()) &&
Op->getType()->getScalarSizeInBits() >= TD->getPointerSizeInBits(
cast<PtrToIntInst>(CI)->getPointerAddressSpace()))
Op->getType()->getScalarSizeInBits() >= TD->getPointerSizeInBits())
return true;
// trunc to a native type is free (assuming the target has compare and